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Divestitures and Other Transactions Integration and Separation Costs (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2019 | Mar. 31, 2018
Integration and Separation Costs [Abstract] |  |
Integration and Separation Costs | $ 405 | $ 255

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- Definition Integration and separation costs includes costs incurred to prepare for and close the Merger, post-Merger integration expenses and costs incurred to prepare for the Intended Business Separations. These costs primarily consist of financial advisory, information technology, legal, accounting, consulting and other professional advisory fees associated with preparation and execution of these activities. + References No definition available. + Details
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- Definition Integration and Separation Costs [Abstract] + References No definition available. + Details
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